<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 行内元素（设置宽高不起作用，同时一组标签排不满一行，另外一组会自动往后排） -->
    <i style="width: 200px; height:40px; background:red;">你好</i>
    <em>你好</em>
    <b>你好</b>
    <strong>你好</strong>
    <ins>你好</ins>
    <u>你好</u>
    <s>你好</s>
    <del>你好</del>
</body>
</html>